It probably comes as no surprise that people do things behind closed doors that they would never want to become public knowledge. But since the advent of easily concealable recording equipment, it's become much easier to catch someone in a controversy and broadcast it to the world.

Many a politician, royal family member, sports figure and other celebrity has been caught on audio or video saying or doing something they'd rather have erased from public memory, and some recordings have gotten people into real trouble.

Scandals caught on tape have caused everything from simple embarrassment to impeachment to jail time for the unlucky parties. From naughty royals to fallen politicians, here are 10 of the most incriminating secret recordings in recent history.